Last updated: June 2026
The best mattress for side sleepers is a medium to medium-firm memory foam mattress that cushions your shoulder and hip while keeping your spine straight. Side sleeping is the most popular position, but it puts your shoulder and hip in direct contact with the bed - so if the surface is too firm, those points take all the pressure and you wake up aching. Memory foam solves it by contouring: it lets your shoulder and hip sink in just enough while supporting the rest of you. Our Revive memory foam is the pick for side sleepers, with the Hybrid a strong option if you want a slightly firmer, more layered feel.
If you sleep on your side and wake up sore, this is for you.
Why side sleepers need a different mattress
When you lie on your side, your body is not flat against the bed. Your shoulder and hip stick out and carry most of your weight on two narrow points. Your waist, meanwhile, curves away from the mattress and needs to be filled in and supported - otherwise your spine bends sideways like a banana all night.
So a side sleeper needs two things at once:
- Enough give for the shoulder and hip to settle in, so they do not get crushed.
- Enough support under the waist to keep the spine in a straight line.
A board-hard mattress fails the first - it pushes back hard on your shoulder and hip until they ache and go numb. A too-soft mattress fails the second - you sink in a heap and your spine bends. You need the middle, with smart contouring. That is memory foam's home turf.
Why memory foam is best for side sleepers
Memory foam moulds to your exact shape. For a side sleeper, that means it cushions the shoulder and hip while filling in and supporting the waist. The pressure spreads out instead of digging into two points, and your spine stays aligned. That is why side sleepers who switch to good memory foam usually stop waking with a dead arm, a sore shoulder, or hip pain.
Our Revive is built for exactly this - deep pressure relief in all the right places, made for side sleepers specifically. It also kills motion transfer, which matters because side sleepers often share a bed and get jolted by a moving partner.
The right firmness for side sleeping
Side sleepers generally want medium to medium-firm.
- Too firm is the classic side-sleeper mistake. It feels supportive in the shop, then your shoulder and hip take a beating all night.
- Too soft lets you sink and bends your spine.
- Medium to medium-firm with good contouring is the sweet spot.
If you are a lighter build, lean toward the softer end - you do not press in as much, so you need a bit more give to let your shoulder settle. If you are heavier, lean firmer and higher density, so you get the contour without sinking too far.
Shoulder and hip pain - the side sleeper's curse
If you wake with a sore shoulder or aching hip, the bed is the first suspect. On the wrong surface, those joints are pinned under your body weight on a hard point for hours. Good memory foam relieves that by letting the joint settle into the foam instead of being pressed against it. A lot of "I must have slept funny" shoulder pain is actually "my mattress is too firm for side sleeping" pain. There is more in our back pain guide.
What about a pillow?
Quick but important: side sleepers need a higher pillow than back sleepers. Your head sits further from the mattress because your shoulder lifts it up, so you need a pillow thick enough to keep your neck level with your spine. Get the mattress right and then match the pillow to it - the two work together. A perfect mattress with a flat pillow still leaves your neck bent.
How to choose
- Go memory foam for the best pressure relief - the Revive.
- Aim medium to medium-firm; softer if you are light, firmer and denser if you are heavier.
- Want a slightly firmer, more "on top" feel - the Hybrid, with its comfort top over a firm base.
- Match a higher pillow to keep your neck aligned.
- Trial it. Give your shoulders and hips a couple of weeks to feel the difference. We include 365 nights.
The bottom line
If you sleep on your side, you need a mattress that cushions your shoulder and hip while keeping your spine straight - and that is what medium to medium-firm memory foam does better than anything else. Stop waking up with a dead arm and a sore hip. The Revive is built for side sleepers; get the firmness matched to your weight and add the right pillow, and side sleeping goes from sore to restful. If you share a bed, our guide for couples covers motion transfer too.
Frequently Asked Questions
What is the best mattress for side sleepers?
A medium to medium-firm memory foam mattress is best for side sleepers. It cushions the shoulder and hip while supporting the waist, keeping the spine straight. The Mr Mattress Revive memory foam is built specifically for side-sleeper pressure relief.
Should side sleepers use a firm or soft mattress?
Medium to medium-firm. Too firm pushes back on the shoulder and hip until they ache; too soft lets the spine bend. Lighter builds can go a little softer; heavier builds should go firmer and higher density to get contour without sinking too far.
Why do I wake up with shoulder or hip pain?
Often because your mattress is too firm for side sleeping, pinning your shoulder and hip against a hard surface for hours. A memory foam mattress lets those joints settle into the foam instead of being pressed against it, relieving the pressure.
Do side sleepers need a special pillow?
Yes. Side sleepers need a higher pillow than back sleepers because the shoulder lifts the head further from the mattress. The pillow should keep your neck level with your spine. The right mattress and the right pillow work together.
Ready to feel the difference? Shop foam mattresses factory-direct at mrmattress.co.za - free delivery nationwide, pay over 24 months, 3 to 10 year warranty depending on range.